My firefox browser will not open, i need my bookmarks so i can reboot my computer

My computer is have problems probably a virus, my firefox browser will not open. i only really need my bookmarks. is there a way of accessing them without opening firefox.

See this: 
http://support.mozilla.com/en-US/kb/Backing+up+your+information

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My firefox browser will not open new windows in tabs, but it will do so when I am in safe mode, what should I be looking for?

I want to view new pages in tabs. I thought I had clicked the appropriate option to do so but it continually opens in a new window instead. I have restarted my browser in safe mode and the tabs are there and work normally. What gives? I am not sure how to narrow down the problem here.

Hello rossqo, '''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
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When you figure out what's causing your issues, please let us know. It might help others with the same problem.
thank you

Firefox "starts" but browser will not open on desktop

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== Two days ago

Hello Joseph.
You may be having a problem with some extension or plugin that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal? [http://support.mozilla.com/en-US/kb/Safe+Mode Safe mode] will do it easy, if you can't hope Firefox.

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Click here and follow the instructions, or if there’s a type of adware not covered by them on the computer, these ones. If you're willing to use a tool to remove it(you don't need to, but may find it easier), you can instead run Adware Medic; this link is a direct download.
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== This happened ==
Every time Firefox opened
== about 3 days ago, I have not done anything out of the ordanary ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET4.0C)

Thankyou for contacting Mozilla, for us to better assist you please join us on live chat.

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My TextEdit will not open email attachments ending docx. How can I remedy this?

No, TextEdit cannot read those. You will need to convert them to .doc files first:
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http://www.microsoft.com/mac/downloads.mspx
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Safari 5.0.6 will not open, says application quit unexpectedly. How can I fix this?

Hello,
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Firefox does not put the file extension ".exe" onto the firefox application, and the browser will not open.

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== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; OfficeLiveConnector.1.3; OfficeLivePatch.0.0; InfoPath.1)

This would usually only happen if the originals were .doc, .dot, .docm, .dotx or .dotm files and someone changed their extensions. Does your Office installation open docx files created in Word 2013? If not, perhaps the Office installation is
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Cheers
Paul Edstein
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I run mac os 10.4.11 and firefox 7 will not open, and I get an error message saying firefox is not supported on this version of mac os. is there a different version I can download? Am I missing something?

firefox used to work no problem, I updated firefox a few month ago, now firefox will not open and I get the error message as above

As of Firefox 4.0 and newer one needs both OSX 10.5+ and a Intel Mac.
The last version to work on a Intel Mac using OSX 10.4.* is Firefox 3.6.*
http://www.mozilla.org/en-US/firefox/all-older.html
http://www.mozilla.org/en-US/firefox/7.0/system-requirements/
http://www.mozilla.org/en-US/firefox/4.0/system-requirements/
http://www.mozilla.org/en-US/firefox/3.6/system-requirements/

Firefox 7 will not open, only shows up in processes, after Oct's Windows 7 update and force restart.

Been unable to get FF to open out side of it showing up in the processes. No browser window to even tinker with settings. Uninstalled the latest Windows updates, restarted and still won't open. Then uninstalled recent flash update since that updated as well. Still no go. Uninstalled FF, reboot, re-install FF, reboot, still nothing. I have tried opening in safe mode and FF will not open in safe mode either. Same again after turing off firewall and virus protection. Ran virus and spyware programs, nothing came up in those. Ran them again while in safe mode, just in case, and nothing found on my system.
The Windows and Adobe updates are the only things that have changed on my system since last restart 2 days ago.
No window, no nothing, only FF in the processes takin up 50% of my CPU and usin 30,000k in memory.
What else can I try to get my FF back?

I have the same problem (and with Mozilla Thunderbird) running with Windows Vista OS. The non-opening problem was preceded by a long period where Firefox and other programs were taking absurdly long times, such as one minute, to open. Starting Windows in "safe mode with networking" solves the problems. Similarly, I just found that If I run msconfig.exe and select "diagnostic startup" then Firefox and Thunderbird both start and start up really fast (that is, when most services and startup programs are prevented from starting). However there is no network so they do not connect. I then turned on (in msconfig) enough processes to get networking running and Firefox and Thunderbird still start up really fast.
I am fairly certain there are no viruses on my computer, so the only other possibility is that some program/registry-entry is preventing the OS from working properly. The problem with windows that it is virtually impossible to find something like this, since the Windows OS has very weak self-diagnostics, and the registry is absurdly complicated with over half a million entries on my computer.
If you can do a "repair install" then this will probably fix the problem, but I do not think that Vista has this feature. Alternatively an upgrade of the OS might fix it, such as from Vista to Windows 7.

Firefox update will not open. I reverted to 15.0.1 and it works.

I am running Windows 7. The problem began with update 25.0.1. I completely uninstalled and reinstalled 25.0.1 several times with no success. Quit using Firefox for a time, then tried installing 26.0. Still would not run. So I reverted to 15.0.1, and it will run.
Immediately after installing the upgrade, Firefox will run. After rebooting my computer, Firefox will not open. An error "not responding" appears and I have to go into Task Manager to close Firefox.
I have tried everything in your help files that pertains to my computer. I really like Firefox, but am getting a bit frustrated.

Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that turns off some settings and disables most add-ons (extensions and themes).
''(If you're using an added theme, switch to the Default theme.)''
If Firefox is open, you can restart in Firefox Safe Mode from the Help menu by clicking on the '''Restart with Add-ons Disabled...''' menu item: 
[[Image:FirefoxSafeMode|width=520]] 
If Firefox is not running, you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
Thank you.

My firefox browser will not open, i need my bookmarks so i can reboot my computer

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